High
Junos OS and Junos OS Evolved: In a non-4byte-AS scenario a specific BGP update causes an rpd crash
An Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an eBGP peer which has not negotiated four-octet-AS capability sending a specifically malformed BGP update to cause a Denial-of-Service (DoS).
Announced Source revision 1
Original source ↗CVE-2026-101976
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-101976
Junos OS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Junos OS Evolved
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Juniper Networks",
"product": "Junos OS",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "23.2R2-S7.7",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4",
"lessThan": "23.4R2-S8.13",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.2",
"lessThan": "24.2R2-S5.5",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.4",
"lessThan": "24.4R2-S5",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2",
"lessThan": "25.2R2-S2",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4",
"lessThan": "25.4R1-S3",
"versionType": "custom"
},
{
"status": "affected",
"version": "26.2",
"lessThan": "26.2R1-S2",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Juniper Networks",
"product": "Junos OS Evolved",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "23.2R2-S7.7-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4",
"lessThan": "23.4R2-S8.11-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.2",
"lessThan": "24.2R2-S5.6-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.4",
"lessThan": "24.4R2-S5-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2",
"lessThan": "25.2R2-S2-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4",
"lessThan": "25.4R1-S3-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "26.2",
"lessThan": "26.2R1-S2-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "23.4X100",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.2X100",
"lessThan": "25.2X100-D35-EVO",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.4X300",
"lessThan": "25.4X300-D40-EVO",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-101976
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #23016 · Revision 1
- Added to Heist Feed
- Publisher date